Install "curl" directly in the test wrapper

.gitignore

+.random_seed

.gitlab-ci.yml

@@ -11,7 +11,6 @@ test:
   stage: test
   image: "ai/test:go"
   script:
-    - "apt-get install -qy curl"
     - "./install_restic_for_tests.sh"
     - "go-test-runner ."
   except:
@@ -31,7 +30,6 @@ build:pkg:
   stage: build_pkg
   image: "ai/build:stretch"
   script:
-    - "apt-get install -qy curl"
     - "./install_restic_for_tests.sh"
     - "build-deb"
   dependencies:

install_restic_for_tests.sh

@@ -18,6 +18,7 @@ DOWNLOAD_URL="https://github.com/restic/restic/releases/download/v${RESTIC_VERSI
 set -e
 set -x
 
+test -x /usr/bin/curl || apt-get -qy install curl
 curl -sL "${DOWNLOAD_URL}" | bunzip2 -c > /usr/bin/restic
 chmod +x /usr/bin/restic